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  | isbn    = 0891816607
 
  | isbn    = 0891816607
 
}}
 
}}
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[[file:Wellhead-dual_completion.jpg|thumb|300px|Wellhead in Northeastern BC, Canada The wellhead is a dual completion. Two different zones have been completed however production from the zones remain separate from the zones to the wellhead.]]
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There are three major components of surface production equipment:
 
There are three major components of surface production equipment:
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* ''P''<sub>tf</sub> = flowing tubing head pressure (psia)
 
* ''P''<sub>tf</sub> = flowing tubing head pressure (psia)
 
* ''d'' = choke size (in.)
 
* ''d'' = choke size (in.)
* ''G'' = gas specific gravity
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* ''G'' = gas specific [[gravity]]
 
* ''T'' = wellhead temperature (°R)
 
* ''T'' = wellhead temperature (°R)
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* Compact, small size
 
* Compact, small size
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[[:file:surface-production-equipment_fig5.png|Figure 5]] shows a typical vertical heater treater. Notice that a heater treater is simply a separator in which a firetube has been placed to heat the liquid mixture as it enters the vessel. This heating of the oil and water mixture reduces the viscosity and promotes the separation of the two phases. The fuel for the firetube is usually taken from the gas produced from the well.
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[[:file:surface-production-equipment_fig5.png|Figure 5]] shows a typical vertical heater treater. Notice that a heater treater is simply a separator in which a firetube has been placed to heat the liquid mixture as it enters the vessel. This heating of the oil and water mixture reduces the [[viscosity]] and promotes the separation of the two phases. The fuel for the firetube is usually taken from the gas produced from the well.
    
==Tank batteries and metering==
 
==Tank batteries and metering==
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[[Category:Production engineering methods]]
 
[[Category:Production engineering methods]]
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[[Category:Methods in Exploration 10]]

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